Link to TMS (#411): server side

Test label is transformed into link (taking into account allure.tests.management.system.pattern property). In XML new element is called 'test', probably should rename to 'tms', as well as according label. Also there is no annotation currently to add label - to be discussed (we have custom annotation processor for that purpose). UI side to be done.
@baev Yes, `testId` is precise (we even have `@TestId` annotations). I will rename it. There is also a bit duplication in simple-types.xsd. We can have new complex type `link` with `name`, `url` and `type` attributes or we can address it later.